Lg Electronics Inc.

Jongyoul Lee

Giwon Park

Hanbyul Seo

Youngdae Lee

Seungmin Lee

Hyukjin Chae

Seoyoung Back

Youngtae Kim

Sunghoon Jung

Daesung Hwang

Jinwoo Kim

Jaeho Hwang

Laeyoung Kim

Heejin Kim

Uihyun Hong

Jayeong Kim

The present disclosure relates to transmission prioritization in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a network, information for a threshold related to a buffer status report (BSR); prioritizing a logical channel group (LCG) for the BSR based on the threshold, wherein a highest priority of one or more logical channels having data available for transmission in the LCG is lower than the threshold; prioritizing the BSR based on the prioritized LCG; creating a media access control (MAC) protocol data unit (PDU) comprising at least the prioritized BSR; and transmitting the MAC PDU.

Method and apparatus for transmission prioritization in wireless communication system

Provided are a method for a first device carrying out wireless communication, and an apparatus supporting same. The method may comprise the steps of: transmitting sidelink control information (SCI) to a second device via a physical sidelink control channel (PSCCH); transmitting data to the second device via a physical sidelink shared channel (PSSCH) which is associated with the PSCCH; determining a physical sidelink feedback channel (PSFCH) resource on the basis of a slot and subchannel associated with the PSSCH: increasing a DTX counter by one on the basis of failing to receive hybrid automatic repeat request (HARQ) feedback on the PSFCH resource; receiving, from the second device, information related to dropping the transmission of the HARQ feedback; and decreasing the DTX counter by N on the basis of the information related to dropping the transmission of the HARQ feedback. Sidelink (SL) radio link failure (RLF) may be declared on the basis that the DTX counter reaches the maximum number of DTXs, and N may be a positive integer.

Method and device for RLF in NR V2X

One embodiment is a method for operating a relay user equipment (UE) related to sidelink relay in a wireless communication system, the method comprising: a relay UE establishing a connection with a remote UE; the relay UE transmitting or receiving a packet related to the remote UE to/from a base station; and the relay UE declaring a radio link failure (RLF), wherein the RLF is related to a Uu link, and the relay UE transmits a message notifying of the RLF to the remote UE, the message being related to a relay reselection trigger.

Method for operating UE related to relay in wireless communication system

A method and apparatus for hybrid automatic repeat request (HARQ) transmission using timers for configured grants and discontinuous reception (DRX) is provided. A first wireless device operating in a wireless communication system receives, from a second wireless device, a sidelink HARQ feedback for a media access control (MAC) protocol data unit (PDU) on a physical sidelink feedback channel (PSFCH), and starts a DRX HARQ round trip time (RTT) timer for a HARQ process ID after end of reception of the sidelink HARQ feedback. Upon expiry of the DRX HARQ RTT timer, the first wireless device starts a DRX retransmission timer, and monitors a physical downlink control channel (PDCCH) carrying a sidelink retransmission grant during an active time including a time interval for which the DRX retransmission timer is running.

HARQ transmission using timers for configured grants and discontinuous reception

According to one embodiment of the present disclosure, provided is a method by which a first apparatus performs sidelink communication. In one example, provided is a method by which the first device saves power for sidelink communication in NR V2X.

Method and device for saving power for sidelink communication in NR V2X

Proposed is a method for operating a first device in a wireless communication system. The method may comprise: a step for requesting a report of a channel state, on the basis of information related to a sidelink resource and HARQ information; a step for transmitting an RS related to the measurement of the channel state to a second device; a step for receiving a measurement result related to the channel state from the second device; and a step for reporting the measurement result to a base station.

Method and device for triggering measurement/report of aperiodic sidelink channel state information on basis of retransmission result in wireless communication system

Provided are a method by which a first device performs wireless communication, and an apparatus for supporting same. The method comprises the steps of: transmitting, to a second device, a measurement configuration including a measurement object, a measurement identity, reporting configurations, and quantity configurations, wherein the reporting configurations include information related to a first report interval; and receiving a plurality of measurement report messages, including a measurement result obtained on the basis of the measurement configuration, from the second device on the basis of the first reporting interval, wherein the first report interval can be determined by a first device.

Method and apparatus for performing measurements in NR V2X

An embodiment relates to a method for a sidelink discontinuous reception (DRX)-related operation of a second user equipment (UE) in a wireless communication system, the method comprising: a step in which a second UE enters a sleep state; and a step in which the second UE switches to an awake state in a predetermined interval and receives a broadcast signal from a first UE, wherein the broadcast signal is received on a resource pool configured only for a sidelink broadcast.

Method for sidelink DRX-related operation of UE in wireless communication system

The present disclosure relates to resource request in wireless communications. According to an embodiment of the present disclosure, a method performed by a first wireless device configured to operate in a wireless communication system, the method comprises: receiving, from a network, one or more sidelink grants; creating a data unit based on the one or more sidelink grants; performing a transmission of the data unit to a second wireless device by using the one or more sidelink grants; transmitting, to the network via a physical uplink control channel (PUCCH), a resource request for a retransmission of the data unit based on a quality of service (QoS) requirement of the data unit; receiving, from the network, one or more sidelink grants for the retransmission of the data unit; and performing the retransmission of the data unit to the second wireless device by using the one or more sidelink grants for the retransmission of the data unit.

Method and apparatus for resource request in wireless communication system

Proposed is a method for performing wireless communication by a first device. The method may comprise the steps of: receiving a physical sidelink control channel (PSCCH) from a second device; receiving a physical sidelink shared channel (PSSCH) related to the PSCCH from the second device, wherein sidelink control information (SCI) is received via the PSCCH or the PSSCH related to the PSCCH, and the SCI includes information indicating whether the PSSCH corresponds to last PSSCH transmission: determining a PSFCH resource on the basis of a slot index and a sub-channel index which are related to the PSSCH: transmitting SL HARQ ACK information to the second device via the PSFCH resource; and entering a sleep state on the basis that the SCI includes information indicating that the PSSCH corresponds to the last PSSCH transmission, and the first device transmits the SL HARQ ACK information via the PSFCH resource.

Method and device for entering sleep mode by terminal in NR V2X

A method and apparatus for control SL BSR based on different direct links in sidelink communication system is provided. A first wireless device establishes a sidelink between a second wireless device. A first wireless device triggers a sidelink (SL) buffer status report (BSR) based on data available for transmission via the sidelink. A first wireless device detects a failure on the sidelink. A first wireless device cancels the triggered SL BSR based on the failure on the sidelink.

Method and apparatus for control SL BSR based on different direct links in sidelink communication system

The present disclosure relates to direct link management wireless communications. According to an embodiment of the present disclosure, a method performed by a first wireless device in a wireless communication system comprises: allocating a link identifier (ID) to a second wireless device for a link between the first wireless device and the second wireless device; generating a data unit from one or more logical channels associated with the link ID; transmitting, to the second wireless device, sidelink control information (SCI) scheduling the data unit, wherein the SCI includes at least part of the link ID; and transmitting, to the second wireless device, the data unit.

Method and apparatus for direct link management in wireless communication system

A method for performing wireless communication by a first device is provided. The method may include: receiving, from one or more second devices, one or more physical sidelink control channels (PSCCHs); receiving, from the one or more second devices, one or more physical sidelink shared channels (PSSCHs) related to the one or more PSCCHs; and performing one or more hybrid automatic repeat request (HARQ) process related to the one or more PSSCHs with the one or more second devices.

Method and device for managing HARQ process in NR V2X

A method and apparatus for transmission based on QoS requirement in a wireless communication system is provided. A wireless device sets a priority level of a logical channel. A wireless device detects that Quality of Service (QoS) requirement of the logical channel is not met. A wireless device de-prioritizes the priority level of the logical channel. A wireless device performs the SL transmission and/or the UL transmission for the logical channel with the de-prioritized priority level.

Method and apparatus for transmission based on QoS requirement in a wireless communication system

Disclosed in one embodiment is an operating method of receiving user equipment (Rx UE) for performing sidelink communication in a wireless communication system, the method comprising the steps in which the Rx UE receives sidelink control information (SCI), and the Rx UE receives data related to the SCI, wherein the Rx UE determines the received data to be self-data on the basis of a first comparison between the destination ID and source ID included in the SCI, and the source ID and destination ID of the Rx UE, and a second comparison between the destination ID and source ID related to a MAC header of the data, and the source ID and destination ID of the Rx UE.

Growing community of inventors

Seoul, South Korea

Jongyoul Lee